A pipe jacking end head reinforcing device for municipal pipe jacking construction

Abstract

The application relates to the field of pipe jacking end reinforcement for pipe jacking construction, in particular to a pipe jacking end reinforcement device for municipal pipe jacking construction, which comprises a jack, the jack is fixed on the left side of the right side wall of a starting well, a track is fixed on the bottom of the starting well and left to the jack, a pipe is placed on the top of the track, a plurality of connecting bolts are uniformly arranged on the left end of the pipe, a plurality of hole grooves matched with the connecting bolts are arranged on the right end of the pipe, a fastening ring is arranged between the two pipes, a pipe constraint mechanism is arranged on the top of the starting well and right to the left pipe inlet, a rotating mechanism is fixed on the left end of the jack, and a track plate is fixed on the right side wall of the starting well and left to the front side of the jack through a supporting column. The two pipes are connected and fixed through the fastening ring, the positioning screw and the positioning ball can be fixed in cooperation with the positioning hole and the spherical groove arranged on the pipe, the middle position of the main ring is corrugated, and the fine adjustment and slight rotation of the pipe can be adapted.

Description

Technical Field

[0001] This invention relates to the field of pipe end reinforcement for pipe jacking construction, specifically a pipe end reinforcement device for municipal pipe jacking construction. Background Technology

[0002] Municipal pipe jacking construction refers to the process of constructing pipes under urban roads, bridges, and other municipal facilities. Pipe jacking construction typically includes a launching shaft, a receiving shaft, a pipe jacking machine, the pipe itself, and a track. The launching shaft is the working shaft excavated to house the pipe jacking equipment, while the receiving shaft is the working shaft used to receive the pipe jacking machine. Pipe jacking is a trenchless construction technology that uses pipe jacking equipment to push pipes underground, avoiding damage to urban roads and underground infrastructure. Municipal pipe jacking construction has many advantages, such as no excavation required, rapid construction, and minimal impact on municipal facilities. However, friction between the pipe and the soil layer can cause breakage at the connection point between two pipe sections, making the effective reinforcement of the pipe ends a crucial issue that needs to be addressed.

[0003] In response to the aforementioned problems, invention patent CN115839436A discloses a reinforcement device for the end of a tunnel jacking pipe. This solution uses a front and rear docking ring to engage and fix the grooves of the front and rear docking rings with the outer edge of the jacking pipe, allowing the rear docking ring of the subsequent jacking pipe to engage with the front docking ring of the previous jacking pipe. This enables the splicing plate to be inserted into the splicing groove during the compression process. Combined with the inner rubber waterstop, this effectively improves the stable connection of the jacking pipe end, greatly reducing the problems of leakage and breakage at the connection.

[0004] While the above-mentioned technical solutions can effectively stabilize the connection of the jacking pipe ends and effectively prevent leakage and breakage, rigid connection methods cannot be adapted because the jacking pipe needs to be fine-tuned and slightly rotated during construction. During the jacking pipe construction process, due to the excessive construction length, grout is needed to reduce the friction between the jacking pipe and the soil layer, but the grout is difficult to spread quickly and evenly, resulting in excessive resistance during the jacking pipe construction process. In addition, the uneven jacking force during the jacking pipe extension process can cause the jacking pipe to deviate. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a pipe jacking end reinforcement device for municipal pipe jacking construction, including a jack, the jack being fixed to the left side of the right wall of the starting shaft, a track being fixed at the bottom of the starting shaft and to the left of the jack, a pipe being placed on the top of the track, a uniformly distributed connecting bolt being pre-set at the left end of the pipe, a plurality of holes and slots for matching the connecting bolts being pre-set at the right end of the pipe, and a fastening ring being installed between two pipes, characterized in that a pipe jacking constraint mechanism is provided at the top of the starting shaft and to the right of the left pipe inlet, a rotating mechanism is fixed at the left end of the jack, and a track plate is fixed to the right wall of the starting shaft and to the front of the jack by a support column.

[0006] The starting well has a pre-set groove on the left side of the bottom, and slides are pre-set on the front and back sides of the groove. The pipe jacking constraint mechanism includes a positioning block fixed at the bottom of the groove, a threaded sleeve rod rotatably installed in the middle of the positioning block, threaded rods symmetrically connected on the left and right sides of the threaded sleeve rod by threaded connection, a connecting column fixed at the end of the threaded rod away from the threaded sleeve rod, the connecting column sliding in the slide, and a pipe jacking constraint component fixed on the top of the connecting column near the pipe. The pipe jacking constraint component is used to restrict the position of the pipe jacking into the inlet.

[0007] The fastening ring includes a main ring sleeved between two jacking pipes. The middle of the main ring is corrugated. Streamline rings are symmetrically fixed on the outer side of the main ring, extending to the middle of the main ring without contacting it. Multiple evenly distributed positioning screws are fixed on the left end of the inner side of the main ring. Multiple positioning holes for the positioning screws are opened on the right side of the jacking pipe, located to the left of the slot. The positioning screws pass through the positioning holes and are fixed inside the jacking pipe by nuts. A sliding groove is opened on the right end of the inner side of the main ring, in which a positioning ball is slidably connected. A pressing plate is slidably connected in the groove, at the top of the positioning ball. Multiple limiting posts are connected between the pressing plate and the main ring. A rotating shaft is connected to the main ring and the streamline ring, located to the left of the pressing plate, by a threaded connection. The rotating shaft is rotatably mounted on the top of the pressing plate. A semi-circular groove is pre-set on the outer side of the jacking pipe corresponding to the positioning ball.

[0008] Furthermore, the rotating mechanism includes a top plate fixed to the left end of the jack's telescopic shaft, a rotating ring rotatably connected to the side of the top plate, a plurality of balls evenly arranged on the left side of the rotating ring, the balls abutting against the right side of the jack tube, a track column fixed to the front end of the side of the rotating ring, the front end of the track column having a semi-circular protrusion; the track plate is used to cooperate with the track column to drive the rotating mechanism to rotate.

[0009] Furthermore, a corrugated groove is provided in the middle of the rear side of the track plate. The corrugated groove is used to cooperate with the track column to define the rotation trajectory of the rotating ring.

[0010] Furthermore, the jacking pipe restraint mechanism also includes an electric push rod fixed to the upper free end on the right side of the pipe inlet, and the pushing end of the electric push rod is fixed with a jacking pipe restraint assembly.

[0011] Furthermore, the jacking pipe constraint assembly includes an elastic telescopic rod, with one end of the elastic telescopic rod near the jacking pipe being the telescopic end. A bracket is fixed to the telescopic end of the elastic telescopic rod, and a limit roller is rotatably installed in the middle of the bracket. Both the bracket and the limit roller are perpendicular to the direction of movement of the jacking pipe.

[0012] Furthermore, multiple spring rods are symmetrically arranged on the inner sidewall of the slot. A limiting plate is fixed to one end of the spring rod near the center of the slot. The limiting plate is an arc-shaped plate and is divided into a horizontal section and an inclined section. The inclined section of the limiting plate is located near the opening of the slot and is inclined towards the sidewall of the slot.

[0013] Furthermore, annular grooves are formed at the ends of the two streamlined rings that are close to each other, and closed rings are connected in the annular grooves by multiple horizontal springs, with the two closed rings abutting together.

[0014] Furthermore, the right end of the streamlined ring on the right side and the left side of the rotating shaft has multiple evenly distributed through slots. A sleeve block is symmetrically slidably connected in the through slot along the direction of the jacking pipe movement. A slurry outlet pipe is locked in the sleeve block. The lower end of the slurry outlet pipe is connected to a Y-shaped pipe. The Y-shaped pipe passes through the main ring and the jacking pipe and extends into the jacking pipe.

[0015] Furthermore, an annular grouting pipe is installed on the inner wall of the jacking pipe via a support frame. The annular grouting pipe is connected to the Y-shaped pipe. A U-shaped support column is fixed to the annular grouting pipe. A central shaft is fixed to the left end of the U-shaped support column. A cylinder is fixed to the central shaft at each connection point between the annular grouting pipe and the Y-shaped pipe. A bidirectional cylinder is fixed to the side of the cylinder closest to the annular grouting pipe. Two claw plates are fixed to both sides of the bidirectional cylinder. The two claw plates are divided into triangular plates and clamping claws. The clamping claws of the two claw plates on the left and right sides are staggered. The two claw plates are used to position the connection point between the annular grouting pipe and the Y-shaped pipe and drive its displacement.

[0016] Furthermore, a spiral groove is provided on the outer side of the streamlined ring at the position corresponding to the through groove, and the spiral groove is used to diffuse the slurry.

[0017] The beneficial effects of the present invention are as follows: First, the present invention uses a track plate and a track column to drive the rotating ring to rotate and push the jacking tube, thereby making the jacking force on the jacking tube uniform, and the ball bearings reduce the friction between the rotating mechanism and the jacking tube, avoiding the increase in friction and the increase in jacking resistance caused by driving the jacking tube to rotate. At the same time, it can avoid the pushing difficulty caused by the slight tilt of the jacking tube.

[0018] Second, the present invention uses a pipe jacking constraint mechanism to limit the position of the pipe jacking. The threaded rod and the threaded sleeve rod work together to synchronously adjust the position of the left and right pipe jacking constraint components, and precisely control the position limitation of the pipe jacking by the pipe jacking constraint mechanism. The pipe jacking constraint component is the main component of the pipe jacking constraint mechanism to limit the position of the pipe jacking. The limiting roller can limit the position of the pipe jacking without hindering the operation of the pipe jacking, so that it can be constrained and corrected when entering the pipe inlet.

[0019] Third, this invention uses a fastening ring to connect and fix two jacking pipes. The main ring, along with its positioning screws and positioning balls, can be fixed by cooperating with the pre-set positioning holes and spherical grooves on the jacking pipes. This allows for quick connection and fixation of the two jacking pipes. Furthermore, the main ring has a corrugated shape in the middle to accommodate fine adjustments and slight rotations of the jacking pipes. The spring rod, in conjunction with the limiting plate, tightly clamps the connecting bolt while allowing it to rotate to a certain extent, thus facilitating slight rotation of the jacking pipes.

[0020] Fourth, this invention uses an annular grouting pipe in conjunction with a Y-shaped pipe to deliver grout to each grout outlet pipe quickly and evenly. Furthermore, a single cylinder and a double-acting cylinder clamp the connection between the annular grouting pipe and the Y-shaped pipe, causing the Y-shaped pipe to extend along its direction, thus separating the grout outlet pipes to the left and right, thereby expanding the grout spray range and ensuring even diffusion. Simultaneously, the spiral groove further accelerates and evenly disperses the grout, reducing friction between the jacking pipe and the soil layer. This reduces resistance when the jack pushes the jacking pipe, making it more effective for long-distance jacking construction. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a structural schematic diagram from the first perspective of the present invention.

[0023] Figure 2 This is a structural schematic diagram from a second perspective of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the jack, track plate, and rotating mechanism of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the pipe jacking constraint mechanism of the present invention.

[0026] Figure 5 This is a schematic diagram of the fastening ring, jacking pipe, and track of the present invention.

[0027] Figure 6 This is a half-sectional view of the fastening ring of the present invention.

[0028] Figure 7 This is the present invention. Figure 6A magnified view of a portion of point A in the middle.

[0029] Figure 8 This is the present invention. Figure 6 A magnified view of a section at point B in the middle.

[0030] Figure 9 This is a schematic diagram of the structure of the annular slurry pipe, the 7-shaped support column, the central shaft, the bidirectional cylinder, and the two claw plates of the present invention.

[0031] Figure 10 This is a schematic diagram of the structure of the bidirectional cylinder and the two claw plates of the present invention.

[0032] In the diagram: 1. Jack; 11. Support column; 12. Track plate; 2. Track; 21. Groove; 3. Pipe jacking constraint mechanism; 31. Positioning block; 32. Threaded sleeve; 33. Threaded rod; 34. Connecting column; 35. Pipe jacking constraint assembly; 351. Elastic telescopic rod; 352. Bracket; 353. Limiting roller; 36. Electric push rod; 4. Rotating mechanism; 41. Top plate; 42. Rotary ring; 43. Ball bearing; 44. Track column; 5. Fastener 51. Ring; 511. Main ring; 512. Positioning screw; 513. Positioning ball; 514. Extrusion plate; 515. Limiting post; 516. Rotating shaft; 52. Streamline ring; 521. Closed ring; 522. Sleeve block; 523. Slurry outlet pipe; 524. Y-shaped pipe; 525. Annular slurry passage pipe; 526. 7-shaped support column; 527. Central shaft; 528. Two-way cylinder; 529. Two claw plates; 53. Limiting plate; 54. Through groove; 55. Spiral groove. Detailed Implementation

[0033] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in the art or in accordance with the product manual.

[0034] See Figure 1 , Figure 2 and Figure 5A pipe jacking end reinforcement device for municipal pipe jacking construction includes a jack 1, which is fixed to the left side of the right wall of the starting shaft. A track 2 is fixed at the bottom of the starting shaft and to the left of the jack 1. A pipe is placed on top of the track 2. The left end of the pipe has evenly distributed connecting bolts, and the right end of the pipe has multiple slots for matching the connecting bolts. A fastening ring 5 is installed between the two pipes. A pipe jacking constraint mechanism 3 is set at the top of the starting shaft and to the right of the left pipe inlet. A rotating mechanism 4 is fixed at the left end of the jack 1. A track plate 12 is fixed to the right wall of the starting shaft and in front of the jack 1 by a support column 11. This invention enables the jacking pipe to be pushed into the inlet through the rotating mechanism 4 and to be accurately positioned through the jacking pipe constraint mechanism 3. At the same time, the fastening ring 5 can connect and firmly position the two jacking pipes. Specifically, the jacking pipe is first hoisted by external hoisting machinery and placed in the track 2. Then, the jack 1 is controlled to push the jacking pipe. At the same time, the rotating mechanism 4 and the track plate 12 cooperate to make the jacking pipe rotate while pushing it. When it is pushed to the distance of one jacking pipe, the jack 1 is controlled to retract. The jacking pipe is hoisted again by external hoisting machinery and placed between the first jacking pipe and the jack 1. The fastening ring 5 is installed between the two jacking pipes. After installation, the jack 1 is controlled to push the jacking pipe again and the above operation is repeated to complete the reinforcement and pushing work of the jacking pipe end during the jacking pipe construction.

[0035] See Figures 1-3 The rotating mechanism 4 includes a top plate 41 fixed to the left end of the telescopic shaft of the jack 1. A rotating ring 42 is rotatably connected to the side of the top plate 41. A plurality of balls 43 are evenly arranged on the left side of the rotating ring 42. The balls 43 abut against the right side of the jack tube. A track column 44 is fixed to the front end of the side of the rotating ring 42. The front end of the track column 44 is provided with a semi-circular protrusion. A corrugated groove is provided in the middle of the rear side of the track plate 12. The corrugated groove is used to cooperate with the track column 44 to define the rotation trajectory of the rotating ring 42. The track plate 12 is used to cooperate with the track column 44 to drive the rotating ring 42 to rotate and push the jacking pipe, so that the jacking force on the jacking pipe is uniform. The ball 43 reduces the friction between the rotating mechanism 4 and the jacking pipe, avoiding the increase of friction and the increase of jacking resistance while driving the jacking pipe to rotate. Specifically, as the jack 1 pushes the top plate 41, the top plate 41 drives the rotating ring 42 to push the jacking pipe. The track column 44 cooperates with the corrugated groove to rotate, thereby uniformizing the jacking force of the jack 1 and applying it to the jacking pipe.

[0036] See Figure 1 , Figure 2 and Figure 4The starting well has a groove 21 pre-set on the left side of the bottom, and slides are pre-set on the front and rear sides of the groove 21. The pipe jacking constraint mechanism 3 includes a positioning block 31 fixed at the bottom of the groove 21, a threaded sleeve rod 32 rotatably installed in the middle of the positioning block 31, and threaded rods 33 symmetrically connected on the left and right sides of the threaded sleeve rod 32 by threaded connection. A connecting column 34 is fixed at the end of the threaded rod 33 away from the threaded sleeve rod 32. The connecting column 34 slides in the slide. A pipe jacking constraint component 35 is fixed on the side of the connecting column 34 near the pipe. The pipe jacking constraint mechanism 3 also includes an electric push rod 36 fixed at the upper free end of the right side of the inlet. The pushing end of the electric push rod 36 is fixed with the pipe jacking constraint component 35. The pipe jacking constraint component 35 is used to restrict the position of the pipe jacking into the inlet. The jacking pipe constraint mechanism 3 is used to limit the position of the jacking pipe. The threaded rod 33 and the threaded sleeve rod 32 work together to synchronously adjust the position of the left and right jacking pipe constraint components 35, and precisely control the position limitation of the jacking pipe by the jacking pipe constraint mechanism 3. Specifically, rotating the threaded sleeve rod 32 will drive the threaded rod 33 to move synchronously inward or outward, thereby adjusting the jacking pipes of different diameters and increasing the applicability of the present invention.

[0037] See Figure 1 and Figure 4 The jacking pipe constraint assembly 35 includes an elastic telescopic rod 351. The end of the elastic telescopic rod 351 closest to the jacking pipe is the telescopic end. A bracket 352 is fixed to the telescopic end of the elastic telescopic rod 351. A limiting roller 353 is rotatably mounted in the middle of the bracket 352. Both the bracket 352 and the limiting roller 353 are perpendicular to the direction of movement of the jacking pipe. The jacking pipe constraint assembly 35 is the main component of the jacking pipe constraint mechanism 3 that completes the position restriction of the jacking pipe. The limiting roller 353 can limit the position of the jacking pipe without hindering its operation, thus constraining and correcting its position as it enters the inlet.

[0038] See Figure 1 and Figures 6-8The fastening ring 5 includes a main ring 51 sleeved between two jacking tubes. The middle of the main ring 51 is corrugated. Streamline rings 52 are symmetrically fixed on the outer side of the main ring 51. The streamline rings 52 extend to the middle of the main ring 51, but the extended part of the streamline rings 52 does not contact the main ring 51. Multiple evenly distributed positioning screws 511 are fixed on the left end of the inner side of the main ring 51. Multiple positioning holes for the positioning screws 511 are opened on the right side of the jacking tube and on the left side of the slot. The positioning screws 511 pass through the positioning holes and are secured by nuts inside the jacking tube. For fixation, a groove is provided on the right end of the inner side of the main ring 51, and a positioning ball 512 is slidably connected in the groove. An extrusion plate 513 is slidably connected in the groove and at the top of the positioning ball 512. Multiple limiting posts 514 are connected between the extrusion plate 513 and the main ring 51. A rotating shaft 515 is connected to the main ring 51 and the streamline ring 52 on the left side of the extrusion plate 513 by a threaded connection. The rotating shaft 515 is rotatably installed on the top of the extrusion plate 513. A semi-circular groove is preset on the outer side of the top tube corresponding to the position of the positioning ball 512. The fastening ring 5 is used to connect and fix two jacking pipes. The main ring 51, along with its positioning screw 511 and positioning ball 512, can be fixed by cooperating with the pre-set positioning hole and spherical groove on the jacking pipe. The middle part of the main ring 51 is corrugated to accommodate the fine adjustment and slight rotation of the jacking pipe. Specifically, the fastening ring 5 is first connected to one of the jacking pipes by the positioning screw 511 and positioning hole, and then fixed by the nut. Then, the other jacking pipe is connected by the positioning ball 512 and the semi-circular groove. The pressing plate 513 is pressed by the rotating shaft 515, so that the positioning ball 512 is tightly pressed into the semi-circular groove, thereby fixing the fastening ring 5 to the other jacking pipe, and thus connecting and fixing the two jacking pipes firmly.

[0039] See Figure 1 and Figures 6-8 Multiple spring rods are symmetrically arranged on the inner sidewall of the slot. A limiting plate 53 is fixed to one end of each spring rod near the center of the slot. The limiting plate 53 is an arc-shaped plate divided into a horizontal section and an inclined section. The inclined section of the limiting plate 53 is located near the opening of the slot and is inclined towards the sidewall of the slot. The spring rods, in conjunction with the limiting plate 53, tightly clamp the connecting bolt while allowing it to rotate slightly, thus facilitating a slight rotation of the jacking pipe and further securing the two jacking pipes.

[0040] See Figure 6 and Figure 7 Two streamlined rings 52 have annular grooves at their ends closest to each other. Multiple horizontal springs connect closed rings 521 within these grooves, and the two closed rings 521 abut against each other. The closed rings 521 protect the gap between the streamlined rings 52 and the main ring 51, preventing dirt and sand from entering the fastening ring 5 and affecting the connection and fixation.

[0041] See Figure 1 and Figures 6-8 On the right side of the streamlined ring 52, located to the left of the rotating shaft 515, multiple evenly distributed through grooves 54 are provided. Within each through groove 54, symmetrically sliding sleeve blocks 522 are connected along the direction of the jacking pipe's movement. A grout outlet pipe 523 is locked within each sleeve block 522. The lower ends of the grout outlet pipes 523 are connected to a Y-shaped pipe 524, which penetrates the main ring 51 and the jacking pipe, extending into the jacking pipe. The Y-shaped pipe 524 within the streamlined ring 52, in conjunction with the grout outlet pipes 523, increases the grout spray area, allowing for rapid and uniform diffusion, thereby effectively reducing friction between the jacking pipe and the soil layer. Specifically, by extending the Y-shaped pipe 524, its bifurcation angle is increased, causing the two grout outlet pipes 523 to separate to the left and right, thus expanding the grout spray range and ensuring uniform diffusion.

[0042] See Figure 9 and Figure 10 An annular grouting pipe 525 is installed on the inner wall of the jacking pipe through a support frame. The annular grouting pipe 525 is connected to the Y-shaped pipe 524. The annular grouting pipe 525 is fixed with a 7-shaped support column 526. A central shaft 527 is fixed at the left end of the 7-shaped support column 526. A cylinder is fixed at the position of each connection between the annular grouting pipe 525 and the Y-shaped pipe 524. A two-way cylinder 528 is fixed on the side of the cylinder near the annular grouting pipe 525. Two claw plates 529 are fixed on both the left and right sides of the two-way cylinder 528. The two claw plates 529 are divided into triangular plates and grippers. The grippers of the two claw plates 529 on the left and right sides are staggered. The two claw plates 529 are used to position the connection between the annular grouting pipe 525 and the Y-shaped pipe 524 and drive its displacement. The annular grouting pipe 525, in conjunction with the Y-shaped pipe 524, delivers grout to each grout outlet pipe 523 quickly and evenly. A single-cylinder and a double-cylinder 528 clamp the connection between the annular grouting pipe 525 and the Y-shaped pipe 524, causing the Y-shaped pipe 524 to extend along its direction, thus separating the grout outlet pipes 523 to the left and right. This is the main driving force for grout diffusion. Specifically, the annular grouting pipe 525 is first installed on the inner wall of the jacking pipe using a support frame, and then connected to the Y-shaped pipe... Connect 524, then install the central shaft 527, and then control the cylinder to make the bidirectional cylinder 528 and the two claw plates 529 approach the connection between the annular grout pipe 525 and the Y-shaped pipe 524. Control the bidirectional cylinder 528 to drive the two claw plates 529 to complete the clamping of the connection between the annular grout pipe 525 and the Y-shaped pipe 524. Control the cylinder again to push the clamping ring position along the direction of the Y-shaped pipe 524 to extend it, so that the two grout outlet pipes 523 separate to the left and right, so that the grout is sprayed out over a wider range.

[0043] See Figure 1 , Figure 2 and Figure 5 A spiral groove 55 is provided on the outer side of the streamlined ring 52 at a position corresponding to the through groove 54. The spiral groove 55 is used to diffuse the slurry. The spiral groove 55 is designed to diffuse the slurry faster and disperse it evenly.

[0044] The working steps of the present invention are as follows: First, the jacking pipe is hoisted by external hoisting machinery and placed in the track 2. Then, the jack 1 is controlled to push the jacking pipe.

[0045] In the second step, as jack 1 pushes the jacking plate 41, the jacking plate 41 drives the rotating ring 42 to push the jacking pipe. The track column 44 rotates in conjunction with the corrugated groove, thereby distributing the jacking force of jack 1 evenly onto the jacking pipe. When the pipe is pushed to the distance of one jacking pipe, jack 1 is controlled to retract, and the jacking pipe is then hoisted again by external hoisting machinery and placed between the first jacking pipe and jack 1.

[0046] The third step involves first connecting the fastening ring 5 and one of the top tubes using the positioning screws 511 and positioning holes, and then fixing them with nuts. Next, the other top tube is connected using the positioning ball 512 and the semi-circular groove. The extrusion plate 513 is then pressed by the rotating shaft 515, causing the positioning ball 512 to be tightly pressed into the semi-circular groove, thereby fixing the fastening ring 5 and the other top tube.

[0047] Fourth step: After installation, first install the annular grout pipe 525 on the inner wall of the jacking pipe through the support pipe frame and connect it to the Y-shaped pipe 524. Then install the central shaft 527. Then control the cylinder to make the bidirectional cylinder 528 and the two claw plates 529 approach the connection between the annular grout pipe 525 and the Y-shaped pipe 524. Control the bidirectional cylinder 528 to drive the two claw plates 529 to complete the clamping of the connection between the annular grout pipe 525 and the Y-shaped pipe 524. Then control the cylinder again to push the clamping ring position along the direction of the Y-shaped pipe 524 to extend it, so that the two grout outlet pipes 523 separate to the left and right.

[0048] Fifth, control jack 1 again to push the jacking pipe and repeat the above operation to complete the reinforcement, pushing and grout diffusion of the jacking pipe end during the jacking construction.

[0049] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, which are still covered within the protection scope of the present invention.

Claims

1. A municipal pipe jacking construction pipe jacking end reinforcement device, comprising a jack (1), the jack (1) is fixed on the left side of the right side wall of the starting well, the bottom of the starting well and the left side of the jack (1) are fixed with a track (2), the top of the track (2) is placed with a pipe, the left end of the pipe is provided with uniformly distributed connecting bolts, the right end of the pipe is provided with a plurality of hole grooves matched with the connecting bolts, and a fastening ring (5) is installed between the two pipes, characterized in that, The top pipe constraint mechanism (3) is arranged at the top of the starting well and on the right side of the left pipe inlet, the left end of the jack (1) is fixed with a rotating mechanism (4), and the trajectory plate (12) is fixed on the front side of the jack (1) through the support column (11) on the right side wall of the starting well. A groove (21) is arranged on the left side of the bottom of the starting well, and slide rails are arranged on the front and back sides of the groove (21); the top pipe constraint mechanism (3) comprises a positioning block (31) fixed at the bottom of the groove (21), a threaded sleeve rod (32) rotatably arranged in the middle of the positioning block (31), two threaded rods (33) symmetrically connected to the left and right sides of the threaded sleeve rod (32) through threaded connection, a connecting column (34) fixed at one end of the threaded rod (33) away from the threaded sleeve rod (32), the connecting column (34) sliding in the slide rail, and a top pipe constraint assembly (35) fixed on the top of the connecting column (34) and close to the side of the top pipe, the top pipe constraint assembly (35) being used for limiting the position of the top pipe entering the pipe inlet. The fastening ring (5) comprises a main ring (51) sleeved between the two top pipes, the middle position of the main ring (51) is corrugated, the outer side of the main ring (51) is fixed with a streamline ring (52) symmetrically left and right, the streamline ring (52) extends to the middle position of the main ring (51) and the extension part of the streamline ring (52) is not in contact with the main ring (51), a plurality of uniformly distributed positioning screws (511) are fixed on the left end of the inner side of the main ring (51), a plurality of positioning holes matched with the positioning screws (511) are arranged on the left side of the hole groove on the right side of the top pipe, the positioning screws (511) pass through the positioning holes and are fixed in the inner side of the top pipe through nuts, a sliding groove is arranged on the right end of the inner side of the main ring (51), a positioning ball (512) is slidingly connected in the sliding groove, an extrusion plate (513) is slidingly connected in the sliding groove and on the top end of the positioning ball (512), a plurality of limiting columns (514) are connected between the extrusion plate (513) and the main ring (51), a rotating shaft (515) is connected to the main ring (51) and the streamline ring (52) and on the left side of the extrusion plate (513) through threaded connection, and the rotating shaft (515) is rotatably arranged on the top of the extrusion plate (513); a semicircular groove is arranged on the outer side of the top pipe and corresponds to the position of the positioning ball (512).

2. The pipe jacking end head reinforcing device for municipal pipe jacking construction according to claim 1, characterized in that, The rotating mechanism (4) comprises a top disc (41) fixed to the left end of the telescopic shaft of the jack (1), a rotating ring (42) rotatably connected to the side of the top disc (41), a plurality of balls (43) uniformly arranged on the left side of the rotating ring (42), the balls (43) abutting against the right side of the top pipe, a trajectory column (44) fixed to the side of the rotating ring (42) and on the front end, and the front end of the trajectory column (44) being provided with a semicircular protrusion; the trajectory plate (12) is used for driving the rotating mechanism (4) to rotate in cooperation with the trajectory column (44).

3. The pipe jacking end head reinforcing device for municipal pipe jacking construction of claim 1, characterized in that, The trajectory plate (12) is provided with a corrugated groove on the back side and in the middle, and the corrugated groove is used for cooperating with the trajectory column (44) to define the rotating track of the rotating ring (42).

4. The pipe jacking end head reinforcing device for municipal pipe jacking construction of claim 1, characterized in that, The top pipe constraint mechanism (3) further comprises an electric push rod (36) fixed to the right side of the pipe inlet and on the free end of the upper portion, and the pushing end of the electric push rod (36) is fixed with the top pipe constraint assembly (35).

5. The pipe jacking end head reinforcing device for municipal pipe jacking construction according to claim 4, characterized in that, The top pipe constraint assembly (35) comprises an elastic telescopic rod (351), one end of the elastic telescopic rod (351) close to the top pipe is a telescopic end, a support (352) is fixed to the telescopic end of the elastic telescopic rod (351), a limiting roller (353) is rotatably installed in the middle of the support (352), and the support (352) and the limiting roller (353) are perpendicular to the moving direction of the top pipe.

6. The pipe jacking end head reinforcing device for municipal pipe jacking construction of claim 1, characterized in that, The inner side wall of the hole groove is symmetrically provided with a plurality of spring rods, one end of the spring rod close to the center of the hole groove is fixed with a limiting plate (53), the limiting plate (53) is an arc-shaped plate and is divided into a horizontal section and an inclined section, the inclined section of the limiting plate (53) is close to the position of the hole groove opening, and the inclined section thereof is inclinedly arranged to the side wall of the hole groove.

7. The pipe jacking end head reinforcing device for municipal pipe jacking construction of claim 1, characterized in that, Two said flow line rings (52) are provided with ring grooves at one end close to each other, and a plurality of horizontal springs are connected with a closing ring (521) in the ring groove.

8. The pipe jacking end head reinforcing device for municipal pipe jacking construction of claim 1, characterized in that, The right end of the right said flow line ring (52) and the left side of the rotating shaft (515) are provided with a plurality of uniformly distributed through grooves (54), the through grooves (54) are symmetrically and slidingly connected with sleeving blocks (522) along the moving direction of the top pipe, the sleeving blocks (522) are locked with slurry outlet pipes (523), the lower ends of the slurry outlet pipes (523) are commonly connected with Y-shaped pipes (524), and the Y-shaped pipes (524) penetrate the main ring (51) and extend into the top pipe.

9. The pipe jacking end head reinforcing device for municipal pipe jacking construction of claim 8, characterized in that, The inner wall of the top pipe is provided with annular slurry conveying pipes (525) through the branch pipe frame, the annular slurry conveying pipes (525) are connected with the Y-shaped pipes (524), the annular slurry conveying pipes (525) are fixed with 7-shaped supporting columns (526), the left end of the 7-shaped supporting column (526) is fixed with a middle shaft (527), a gas cylinder is fixed at the position corresponding to the connection position of each annular slurry conveying pipe (525) and the Y-shaped pipe (524), a bidirectional gas cylinder (528) is fixed to the side close to the annular slurry conveying pipe (525), two claw plates (529) are fixed to the left and right sides of the bidirectional gas cylinder (528), the two claw plates (529) are divided into triangular plates and clamping jaws, the clamping jaws of the two claw plates (529) on the left and right sides are staggered, and the two claw plates (529) are used for positioning and driving displacement of the connection position of the annular slurry conveying pipe (525) and the Y-shaped pipe (524).

10. The pipe jacking end head reinforcing device for municipal pipe jacking construction of claim 8, characterized in that, The outer side of the flow line ring (52) and the position corresponding to the through groove (54) are provided with a spiral groove (55), and the spiral groove (55) is used for diffusing slurry.

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